+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + NASA Center + Publication Year + Subject + Availability Options + Item/Media Type Selected Navigations: Author > Heyward, Ann O. [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 18 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order Prev 1 2  Application of heuristic satellite plan synthesis algorithms to requirements of the WARC-88 allotment plan Author(s): Heyward, Ann O.; Reilly, Charles H.; Walton, Eric K.; Mata, Fernando; Olen, Carl Abstract: Creation of an Allotment Plan for the Fixed Satellite Service at the 1988 Space World Administrative Radio Conference (WARC) represented a complex satellite plan synthesis problem, involving a large number of planned and ... NASA Center: Glenn Research Center, Langley Research Center Publication Year: 1990 Added to NTRS: 2005-08-25 Accession Number: 90N14856; Document ID: 19900005540; Report Number: AIAA PAPER 90-0815, E-5266, NAS 1.15:102479, NASA-TM-102479 Application of a hybrid generation/utility assessment heuristic to a class of scheduling problems Author(s): Heyward, Ann O. Abstract: A two-stage heuristic solution approach for a class of multiobjective, n-job, 1-machine scheduling problems is described. Minimization of job-to-job interference for n jobs is sought. The first stage generates alternative ... NASA Center: Glenn Research Center Publication Year: 1989 Added to NTRS: 2005-08-25 Accession Number: 90N10674; Document ID: 19900001358; Report Number: E-5086, NAS 1.15:102367, NASA-TM-102367 Achieving spectrum conservation for the minimum-span and minimum-order frequency assignment problems Author(s): Heyward, Ann O. Abstract: Effective and efficient solutions of frequency assignment problems assumes increasing importance as the radiofrequency spectrum experiences ever increasing utilization by diverse communications services, requiring that the ... NASA Center: Glenn Research Center Publication Year: 1992 Added to NTRS: 2005-08-25 Accession Number: 92N23187; Document ID: 19920013944; Report Number: AIAA PAPER 92-1960, E-7010, NAS 1.15:105649, NASA-TM-105649 WARC's last act Author(s): Taylor, Robert M.; Heyward, Ann O.; Reinhart, Edward E.; Miller, Joel Abstract: The upcoming 1992 World Administrative Radio Conference is discussed. The reasons for its importance are given, and three new types of services that are high on the list for consideration are examined. They are universal ... NASA Center: NASA (non Center Specific) Publication Year: 1992 Added to NTRS: 2004-11-03 Accession Number: 92A29684; Document ID: 19920047060 Numerical arc segmentation algorithm for a radio conference-NASARC, version 2.0: User's manual Author(s): Whyte, Wayne A., Jr.; Heyward, Ann O.; Ponchak, Denise S.; Spence, Rodney L.; Zuzek, John E. Abstract: The information contained in the NASARC (Version 2.0) Technical Manual (NASA TM-100160) and the NASARC (Version 2.0) User's Manual (NASA TM-100161) relates to the state of the Numerical Arc Segmentation Algorithm for a Radio ... NASA Center: Glenn Research Center Publication Year: 1987 Added to NTRS: 2004-11-03 Accession Number: 88N16928; Document ID: 19880007544; Report Number: E-3723, NAS 1.15:100161, NASA-TM-100161 Application of heuristic satellite plan synthesis algorithms to requirements of the WARC-88 allotment plan Author(s): Heyward, Ann O.; Reilly, Charles H.; Walton, Eric K.; Mata, Fernando; Olen, Carl Abstract: Creation of an Allotment Plan for the Fixed Satellite Service at the 1988 Space World Administrative Radio Conference (WARC) represented a complex satellite plan synthesis problem, involving a large number of planned and ... NASA Center: Glenn Research Center Publication Year: 1990 Added to NTRS: 2004-11-03 Accession Number: 90A25638; Document ID: 19900038583; Report Number: AIAA PAPER 90-0815 Achieving spectrum conservation for the minimum span and minimum-order frequency assignment problems Author(s): Heyward, Ann O. Abstract: Effective and efficient solution of frequency assignment problems assumes increasing importance as the radiofrequency spectrum experiences ever-increasing utilization by diverse communications services, requiring that the ... NASA Center: Glenn Research Center Publication Year: 1992 Added to NTRS: 2004-11-03 Accession Number: 92A29883; Document ID: 19920047259; Report Number: AIAA PAPER 92-1960 An allotment planning concept and related computer software for planning the fixed satellite service at the 1988 space WARC Author(s): Miller, Edward F.; Heyward, Ann O.; Ponchak, Denise S.; Spence, Rodney L.; Whyte, Wayne A., Jr., et al. Abstract: The authors describe a two-phase approach to allotment planning suitable for use in planning the fixed satellite service at the 1988 Space World Administrative radio Conference (ORB-88). The two phases are (1) the ... NASA Center: Glenn Research Center Publication Year: 1987 Added to NTRS: 2004-11-03 Accession Number: 88A36482; Document ID: 19880049255 Prev 1 2  + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007